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Size: 3532
Comment:
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Size: 2613
Comment:
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| Deletions are marked like this. | Additions are marked like this. |
| Line 29: | Line 29: |
| 1. Setup the ring stand or bench clamp on the table. 2. Mount the apparatus in such a way that the projectile's plane of flight is perpendicular to the class. |
1. Attach a vertical rod stand to the bench. 1. Clamp the apparatus to the rod with the apparatus extending over the edge of the bench, so that when the gun is fired the two balls will miss the bench. 1. Cock the apparatus and place the ball with the whole through it, on the horizontal shaft of the gun. 1. Place the other ball in the dimple on the other side of the apparatus. |
| Line 41: | Line 43: |
| When the gun is fired the shaft is drown out of the ball and that ball drops vertically to the floor. The other ball on the other end of the apparatus gets hit by the sliding rod and sends this ball fling in the horizontal direction. Both balls are set into motion at the same time when the gun is fired and shows that the two balls will strike the floor at the same time despite the difference in the ball's trajectories. The two balls striking the floor can be observed by the simultaneous sounds at the point of impact. |
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| Line 45: | Line 50: |
| Use the Tall cart for a better show. Push ball down in the cart and insert the retaining pin in the bottom whole of the tall ballistic cart. The retaining pin is attached to a string with is tide to a C-clamp and clamped to the bench. The bridge is placed about one string length in front of the cart when the retaining pin string is taunt. Lineup the cart with the bridge so that when you give the cart a good push the retaining pin is pulled out by the string which is C-clamped to the bench. Thus releasing the ball that was in the cart. The cart should roll under the bridge and the ball should go over the bridge. The ball should land back inside the cart on the other side of the bridge. | |
| Line 47: | Line 51: |
| Use either an air hoses or a board and eraser as bumpers to prevent cart from falling of the bench. PROCEDURE: SETUP: Take the C-clamp with the release pin tied to it and clamp it to the side of the bench. Load the cannon by placing the steel ball in the cannon and push the ball down as far as you can. Then insert the release pin in to the small whole in the side of the cannon. The taller cart has two wholes, use the lower one. Roll the loaded cart out as far as the string will let you without releasing the pin. This gives you a distance guide, lets call it "L", to put the bridge. Place the bridge at a distance of 3/2L from the C-clamp, But no farther then 2L. Make sure the cart can go under the bridge without hitting the top of the bridge. Also make sure there is something to stop the cart on the other side of the bridge so that the cart does not fly off the bench. Use something like an air hose or 2 bar erasers and lead bricks. 1. List any references |
1. N/A |
[:PiraScheme#Mechanics: Table of Mechanics Demonstration] |
[:MEEquipmentList: List of Mechanics Equipment & Supplies] |
[:Demonstrations:Lecture Demonstrations] |
Drop Shot, 1D60.20
Location:
Cabinet: [:MechanicsCabinet:Mechanic (ME)]
Bay: [:MechanicsCabinetBayA5:(A5)]
Shelf: #2
attachment:DropShot-02-400.jpg
Description:
The drop shot is an apparatus designed to simultaneously drop one steel ball and shoot another one forward with spring power. It can be mounted on a ring stand or a bench clamp.
Equipment |
Location |
ID Number |
|
|
|
Drop Shot Apparatus |
ME, [:MechanicsCabinetBayA5:Bay A5], Shelf #2 |
1D60.20 |
Ring Stand |
Rod and Stand Cabinet |
|
Bench Clamp |
Rod and Stand Cabinet |
|
Important Setup Notes:
- N/A
Setup:
- Attach a vertical rod stand to the bench.
- Clamp the apparatus to the rod with the apparatus extending over the edge of the bench, so that when the gun is fired the two balls will miss the bench.
- Cock the apparatus and place the ball with the whole through it, on the horizontal shaft of the gun.
- Place the other ball in the dimple on the other side of the apparatus.
Cautions, Warnings, or Safety Concerns:
- Pay attention to where the balls will land.
Demonstration:
Tell students to pay attention to the vertical motion of balls. The fact that one of them has a horizontal velocity does not affect its motion in the vertical direction. The balls hit the ground at the same time. Make the analogy about simultaneously firing a bullet out of a gun and dropping one from the end of the barrel.
When the gun is fired the shaft is drown out of the ball and that ball drops vertically to the floor. The other ball on the other end of the apparatus gets hit by the sliding rod and sends this ball fling in the horizontal direction. Both balls are set into motion at the same time when the gun is fired and shows that the two balls will strike the floor at the same time despite the difference in the ball's trajectories. The two balls striking the floor can be observed by the simultaneous sounds at the point of impact.
attachment:DropShot-02-250.jpg |
attachment:DropShot-06-250.jpg |
attachment:DropShot-07-250.jpg |
attachment:DropShot-09-250.jpg |
attachment:BenchRodClamp-01-250.jpg |
References:
- N/A
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